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. 1929 Jan;111(1):43–50.

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The Royal Medico-Chirurgical Society of Glasgow

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits non-commercial use and redistribution provided that the original author and source are credited.

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PMCID: PMC5969922 PMID: 30438256

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